Carefree 211000 10' to 11' Lightweight Buena Vista Room Carefree Buena Vista Room Fits most brands of traditional and 12 Volt awnings with vertical arms It's lightweight, convenient and easy to set up Nearly doubles your living space; Just attach it to your awning, and you're done; Setting up the Buena Vista is quick and easy Includes a one piece skirt, complete room, fits awnings with vertical arms, awning sizes 10 Feet to 11 feet center arm to center arm measurement of awning frame Fits awnings rail to ground measurements of 86 inch to 120 Inch